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Review: Ratio of Mean to Median
Explanation
In this question to find the mean of these four numbers,
we add them up and divide by four:
To find the median, we must order the list: 
.
Since there are an even number of elements in this list, the median is the
average of the middle two:
The mean and the median are the same, so their ratio is 1.
The correct answer is (A).
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